Does it sound like I upset him?

My boyfriend likes it when I have sex with other guys. It's turns him on I guess so that's what I did. He asked me about it and I told him what happened. I told him that the guy kept saying that mixed babies were cute and that he was a sperm donor and that if I ever wanted to have a baby I could call him and then he said well you want a baby so there you go. He has said multiple times that he wasn't ready for a baby so I thought he'd just laugh this off.